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Revert "REF: reduce for combining mask pair-wise"
This reverts commit 65996e6.
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pandas/io/pytables.py

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Original file line numberDiff line numberDiff line change
@@ -5,7 +5,6 @@
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from contextlib import suppress
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import copy
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from datetime import date, tzinfo
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from functools import reduce
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import itertools
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import os
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import re
@@ -4282,8 +4281,9 @@ def write_data(self, chunksize: Optional[int], dropna: bool = False):
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# consolidate masks
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if len(masks):
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combine_masks = lambda first, second: first & second
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mask = reduce(combine_masks, masks)
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mask = masks[0]
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for m in masks[1:]:
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mask = mask & m
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mask = mask.ravel()
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else:
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mask = None

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